Local heat treatment module fixing device

The utility model relates to the field of local heat treatment, in particular to a local heat treatment module fixing device which comprises a connecting device used for being connected with a heating piece set to form a local heat treatment module, and a heat preservation device is arranged on the local heat treatment module. Each heating sheet group comprises a plurality of connected heating sheets, connecting holes are formed in two ends of each heating sheet, two adjacent heating sheet groups are respectively a first heating sheet group and a second heating sheet group, and the heating sheet, connected with the second heating sheet group, in the first heating sheet group is the first heating sheet; according to the conditions of preheating, dehydrogenation and local heat treatment equipment required on site, the heating plate groups can be conveniently and quickly connected to manufacture different module specifications, heat treatment module fixing devices with different specifications are adjusted in ad